Spraying device



J. A. MARCUSE SPRAYING DEVICE July 25, 1950 2 Sheet's-Sheet' 1 Filed Nov. 13, 1947 Patented July 25, 1950 JohnA."Marcusenscarsdale, N. Y assignor to West Disinfectin'g Company, Long Island City,

Application November 13, 1947, Serial No. 785,605

This invention relates to spraying devices, .and particularly to those employed for the purpose of spraying or atomizing liquids, such as insecticides, disinfectants and other liquid preparations.

One of the objects of the invention is to provide a device of this character which will be especially adapted for the spraying of relatively large areas, such as interiors of theatres, factories, audito- 3 clam (c1. 299 5s) riums and other large roomsor enclosures. .The

invention contemplates the provision of means by which a plurality of jets orsprays are simultaneously directed radially from an arcuatelyarranged bank of spray nozzles, sothat a cloud or mist of substantial size and of fine spray is directed from the device over a considerable area during the operation of the sprayer.

Another object of the invention is to provide a device of this character, which, while having a very substantial spraying capacity. maybe made portable if desired and thus easily transported from place to place, and this, coupled with the extensive spraying capacity of the device, enables a large area to be very quickly and uniformly sprayed. I

More particularly, the invention contemplates the provision of a fluid-containing receptacle of substantial capacity on which is mounted a spraying head in the form of a substantially semicircular hollow housing having an arcuatelyshaped top in which a plurality of spray nozzles are radially mounted. Compressed air is di rected into the hollow housing and from the interior of the same through the nozzles, said. nozzles being also connected to siphon tubes which extend from the nozzles into the fluid-containing chamber to reach the fluid therein.

These and other objects are attained by the invention, a more particular description of which will hereinafter appear and be set forth in the.

claims appended hereto.

In the accompanying drawings, wherein-an illustrative embodiment of the invention is disclosed, Fig. 1 is a rear view, with parts in section of the spraying head with the cover mem her thereof shown in dotted lines; Fig. 2 is a top plan view of the structure of Fig. 1; Fig. 3 is a side view of the same; Fig. 4.. is a vertical sectional view through one ofthe spray nozzles; Fig. 5 is a side elevation of the body portion of one of the spray nozzles; Fig. 6 is a side elevation of the cap or tip portion of the nozzle: '7

- is a view looking at the under side of the body of the nozzle shown in Fig. 6;, Fig. 8 is a vertical sectional view through. the air distributing chamber or housing, with the cover member fitted thereover, the nozzles and the upper portions of the siphon tubes being shown in phantom, and Fig. 9 is a front view of the spraying head anda portion of the top of the fluid-containing receptacle.

With reference to the drawings, vI indicates the body of the fluid-containing receptacle, the same being preferably of substantial size and capable of being mounted, if desired, upon a small handpushed truck or dolly sothat the spraying device may thus be moved from place to place throughout the area to be sprayed. The liquid to be sprayed is contained within the receptacle I, which may be provided with a suitable filler opening and also with a gauge, if desired, to constantly indicate the" level of the liquid contained in the receptacle. t

Thetop member of the receptacle I is indicated at 3 and secured on top of the member 3, .byv means of the screws 4 or other equivalent fastening means, is thebase plate .5 of the spraying head. The spraying head includes a housing constituting an air-distributing chamber or air manifold E, which may be a casting of onepiece construction having flanges 1 at its OPPO- site ends by means of which it is mounted upon the plate 5 by the screws 8. The air-distributing chamber or housing 6 is of substantially semicircular shape and is hollow and provided with a. nipple 9 which is internally threaded to enable it to be coupled to the end of a pipe or conduit in leading from a source of air under pressure. I The source of the compressed air may be a suitable stationary tank. or a small tank and air-compressor -mounted on a hand truck or dolly in company with the spraying device. The com- I pressed air is thus directed into the interior of the chamber 6 and is forced through a plurality 6 is closed by a threaded plug it.

a the several nozzles I l is such that when the spray area-and thus the spraying of a large room or of spray nozzles H, the construction of which will be presently set forth.

The nipple I2 in the front wall of the chamber The nozzles I l are arranged in the manner most clearly shown in Fig. 1. namely. in substantially equally-spaced relationship pro ecting radially from the arcuate periphery M of the chamber 5. said peripheryfba ing defined by the integral curved top wall P5 of the chamber 5. Thus. the radial disposition of.

is ejected therefrom in the manner to be de" scribed, the spray will. cover a very considerable other substantial space can be very quickly and thoroughly done.

The construction of each of the nozzles, H is shown in Figs. 4 to 7 inclusive, wherein it will be noted that the nozzle is composed of three main parts, namely, a body portion It, a gasket ll and a cap or tip portion I8. The body portion I6 is formed with a shank 19 having threads 20 which are threadably received in a threaded aperture 20a provided in the top or arcuate wall 15 of the chamber or housing .5. Located above the threaded shank IQ of the body 1-6 is a hexagonal portion 2|, above which is the threaded part 22 terminating at the top in the flat shoulder 23, from which arises a conical stem 24 terminating at the top in the cylindrical tip 25. Extending axially through the portion 20 of the body, is a central passage 26, the upper end of which is in communication with three parallel longitudinally-extending passages 21 which emerge at the shoulder 23. 'Extending centrall through the body of the nozzle is the longitudinally-extending air passage 28, which emerges at the tip 25, as clearly seen in Fig. 41. At its opposite end, the air passage 28 connects to a lateral passage 29 which extends through the hexagonal portion 2! of the body and threadably receives at 30a one end of a siphon tube 3!]. Said siphon tube 30 extends laterally from the nozzle and is then bent downwardly, as indicated at 3! in Fig. 3 and passes through the ,hole 32, provided in the plate and top member 3., to reach the interior of the fluid-containing receptacle I for access to the liquid contents 2 of the .same.

The cap or tip member I8 of each of .the nozzles H isshown in detail in Figs. 4 and 6, wherein 34 (Fig. 4) which fits around the cylindrical tip part 25 but is spaced therefrom to thereby provide an annular space 35 between thesurface of the tip 25 and the inner surface of .the aperture 34. Leading downwardly from the aperture.

34 is a flared or tapered passage 36 which about but isspaced away from the surface of the tapered stem 24. When the cap member 18 is ,fitted in position over the end of the body"; and

is threaded down upon the threads 22 on the same, the washer or gasket i1 .is compressed between the shoulder 38 on the inside of the cap and the shoulder 23 of the body It. -.Said washer ll clears the three passages 2i so that said passages communicate with the tapered passage 36 which in turn leads into the aperture 34. Thus,

upwardly through the siphon tube 30 and out through the passage 28 to be ejected in the form of a fine mist or spray at the outlet of the nozzle. The radial disposition of the several nozzles ill is such that the sprays simultaneously ejected from the nozzles impinge against one another a distance from the outlets and a cloud of spray or mist is diilused and spread about by the sprayer to cover a wide area.

, I .To protect the nozzles and the several siphon I tubes leading therefrom, a suitable semi-circular cover member 40 is provided which fits over the housing or chamber 6 and is fastened to the base plate 5 by means of screws or other equivalent fastening elements 4| passing through lugs 42 extending laterally from the cover member 4'0. In its front wall, the cover member 40 is formed with an opening 43 to clear the compressed air conduit III. In its top or peripheral wall 44, the cover is formed with a, plurality of openings 44 to expose the tip ends of the nozzles I I and permit the free ejection of the sprays therefrom. Fig. Qshows the front of the cover 40 wherein it will be seen that the same encloses and fully protects the parts .of the spraying device.

From the foregoing, the operation of the improved spraying device will be readily understood. When the conduit I3 is connected to a suitable source of compressed air, the air, passing through the conduit ID, will enter the airdistributing chamber or housing 5 and pass out through the communicating passages 25, 21', 3'6 and 34 of the nozzles, creating a siphon efiect which will draw the liquid up through the several siphon tubes 3.0 and cause it to be ejected in a line steam ,or mist. The radial disposition of the nozzles will cause a substantial cloud of spray or mist to be distributed by the nozzles, thus covering a large area and effective, uniform, and thorough distribution of the material being sprayed will be had. I

While I have shown and described one embodiment of the invention, it is obvious that the same is not to be restricted thereto, but is broad enough to cover all structures coming within the scope of the annexed claims.

Vlfhat I claim is:

1. A iprayingdevice of the character described comprising, a fluid-containing receptacle, an airdistributing chamber mounted on the top of and separated from said receptacle, means for direc ing air under pressure into said chamber, said chamber being provided with an arcuate horizontal outer wall, a plurality of spray nozzles mounted in said wall and projecting upwardly and radially from the same, said nozzles beingin communication with the interior of theair chamber, a siphon tube connected at one end to each nozzle, said siphon tubes extending laterally from the nozzles and .thence extending downwardly externally .of the air chamber and through the top of the fiuid-containing receptacle .to enter the same and reach the fiuid contained 'insaid receptacle.

2. A spraying device of the ,characterdescribed comprising, a fluid-containing receptacle, a plate attached to .the top of the same, a substantially semi-circular hollow housing attached to. the top of said plate and ,arising from thesame, anairsupply conduit entering one of the walls of the said housing to reach the .interior of the housing, the housing havingv an arcuately-shaped horizontally disposed top wall, a pluralityof spaced, upwardly and radially-extending spray nozzles mounted insaid top wall of the housing, and being .in communication withv the interior of the housing, each of said nozzles including a siphon tube extending laterally from it on theoutside of the housing and .directed downwardly and passing through the plate and entering the interior of the fluid-containing receptacle and reaching .the fluid contained in the same.

,3. A spraying device .of the character described comprising, a fluid-containing receptacle, an airdistributing chamber mounted on top .of and separated from said receptacle, said chamber being substantially semi-circular and having a, fiat bottom secured to and resting on top of the fluid container, said air-distributing chamber being provided with an arcuately-shaped top, said chamber having vertically-disposed side walls, an air-supply conduit entering one of the side walls of the air-distributing chamber to reach the interior of the same and convey air under pressure thereto, a plurality of spaced, upwardly and radially-extending spray nozzles mounted in the arcuate top of the air-distributing chamber and being in communication with the interior of said chamber, each of said nozzles including a siphon tube extending laterally from it on the outside of the air-distributing chamber and directed downwardly and entering into the interior of the fluidcontaining receptacle and reaching the fluid contained within the same, and a substantially semicircular cover member fitted over the air-distributing chamber and nozzles and parts of the siphon tubes, said cover member being apertured to expose the outlet ends of the spray nozzles. JOHN A. MARCUSE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

